Reply To: 67 break power break booster Home › Forums › Discussion Forum › 67 break power break booster › Reply To: 67 break power break booster April 3, 2017 at 2:25 pm #736 Steve OKeefeParticipant Thanks Moose I don’t have any signs that the wheel cylinders are leaking but it will check those out. As far as the hydrovac break booster goes do you know who made those and if you can still get replacements for them. Of a rebuild kit.